Table 3 Baseline demographic characteristics of the COACS population stratified by gender
From: China suboptimal health cohort study: rationale, design and baseline characteristics
Characteristics | Total (n = 4313) | Women (n = 2319) | Men (n = 1994) | P value |
|---|---|---|---|---|
Age (years)* | 36.9 ± 10.5 | 37.5 ± 10.4 | 36.2 ± 10.6 | <0.001# |
Nationality | ||||
 Han | 4176 (96.8 %) | 2249 (97.0 %) | 1927 (96.6 %) | 0.524 |
 Others | 137 (3.2 %) | 70 (3.0 %) | 67 (3.4 %) | |
Socioeconomic statusa | Â | Â | Â | Â |
 ≤¥3000 | 1393 (32.8 %) | 820 (35.9 %) | 573 (35.9 %) | <0.001# |
 ¥3001–5000 | 2509 (59.1 %) | 1316 (57.5 %) | 1193 (57.5 %) | |
 >¥5000 | 343 (8.1 %) | 151 (6.6 %) | 192 (6.6 %) | |
Marital status | ||||
 Married with spouse | 3778 (87.6 %) | 2087 (90.0 %) | 1416 (84.8 %) | <0.001# |
 Widowed, separated, or divorced | 69 (1.6 %) | 47 (2.0 %) | 18 (1.1 %) | |
 Never married | 466 (10.8 %) | 185 (8.0 %) | 277 (14.1 %) | |
Highest education completed | ||||
 Illiteracy or compulsory education | 431 (10.0 %) | 255 (11.0 %) | 176 (8.8 %) | <0.001# |
 High school | 823 (19.1 %) | 510 (22.0 %) | 313 (15.7 %) | |
 College school or higher | 3059 (70.9 %) | 1554 (67.0 %) | 1505 (75.5 %) | |
Smoking history | ||||
 Never | 3247 (75.3 %) | 2291 (98.8 %) | 956 (47.9 %) | <0.001# |
 Current | 976 (22.6 %) | 28 (1.2 %) | 948 (47.5 %) | |
 Former | 90 (2.1 %) | 0 (0.0 %) | 90 (4.5 %) | |
Drinking history | ||||
 Never | 3024 (70.2 %) | 2203 (95.1 %) | 821 (41.2 %) | <0.001# |
 Moderate | 762 (17.7 %) | 60 (2.6 %) | 702 (35.2 %) | |
 Heavy | 524 (12.2 %) | 54 (2.3 %) | 470 (23.6 %) | |
Body mass index (kg/m2)b | ||||
 <18.5 | 124 (3.1 %) | 101 (4.6 %) | 23 (1.3 %) | <0.001# |
 18.5–23.9 | 2284 (57.1 %) | 1484 (67.9 %) | 800 (44.1 %) | |
 24.0–27.9 | 1244 (31.1 %) | 485 (22.2 %) | 759 (41.8 %) | |
 >28.0 | 349 (8.7 %) | 115 (5.3 %) | 234 (12.9 %) | |
Physical activity | ||||
 Inactive | 1430 (34.1 %) | 848 (37.5 %) | 582 (30.1 %) | <0.001# |
 Moderately | 655 (15.6 %) | 383 (16.9 %) | 272 (14.0 %) | |
 Very active | 2114 (50.3 %) | 1032 (45.6 %) | 1082 (55.9 %) | |
Salt intake | ||||
 Low | 891 (20.7 %) | 5794 (25.0 %) | 312 (15.6 %) | <0.001# |
 Medium | 2268 (52.6 %) | 1243 (53.6 %) | 1025 (51.4 %) | |
 High | 1154 (26.8 %) | 497 (21.4 %) | 657 (32.9 %) | |
Blood Pressure (mmHg) | ||||
 Systolic blood pressure* | 116.9 ± 10.8 | 114.1 ± 10.9 | 120.1 ± 9.7 | <0.001# |
 Diastolic blood pressure* | 74.5 ± 8.2 | 72.1 ± 8.2 | 77.2 ± 7.3 | <0.001# |
Fasting blood glucose (mmol/L)* | 4.93 ± 0.45 | 4.88 ± 0.43 | 4.99 ± 0.46 | <0.001# |
Total cholesterol (mmol/L)* | 4.26 ± 0.82 | 4.22 ± 0.82 | 4.31 ± 0.82 | <0.001# |
Triglycerides (mmol/L)* | 1.32 ± 1.02 | 1.09 ± 0.66 | 1.59 ± 1.26 | <0.001# |
Suboptimal health status | ||||
 SHS (SHSQ score ≥35) | 389 (9.0 %) | 246 (10.6 %) | 143 (7.2 %) | <0.001# |
 Ideal health (SHSQ score < 35) | 3924 (91.0 %) | 2073 (89.4 %) | 1851 (92.8 %) | |